Improvement in sash-fasteners



UNIT D STATES PATENT, OFFICE.

SAMUEL W. COUCH, OF GOLD SPRING, NEW YORK.

IMPROVEMENT IN SASH-FASTENERS.

Specification forming part of Letters Patent No. 153,934, dated August11, 1874; application filed April 18, 1874.

To all whom it may concern Be it known that I, SAMUEL W. COUCH, of ColdSpring, in the county of Putnam and State of New York, have invented anew and useful Improvement in Window Sash-Lock and Ventilator, of whichthe following is a specification:

Figure 1 is a vertical section of a window frame and sash, showing thelock in side view, and the ventilator in section. Fig. 2 is a detail topview of the spring-bolt forlockin g the upper sash.

Similar letters of reference indicate correspondin g parts.

The invention consists in a novel method of looking a window-sash bymeans of a springbolt and spring-lever of peculiar construction ashereinafter described and claimed.

A represents the frame, B the lower sash, and O the upper sash, of thewindow, which parts are constructed in the ordinary manner. To theforward side of the side bar of the lower sash B is attached a toothedbar, D, which is let into said sash, leaving its teeth projecting, asshown in Fig. 1. E is a leverpawl, the lower end of which is pivoted tothe side of the frame A. The lever-pawl E has a notch formed in theinner side of its upper end, to take hold of the teeth of the bar D, andis held forward against said toothed bar by a spring, F, attached to theframe A, and which presses against the outer side of the said lever-pawlE. The teeth of the bar D, the lever-pawl E, and the spring F, arecovered by the casing of the window, the inner side of which is recessedto receive them. In

the outer side of the upper end of the leverpawl E is formed ascrew-hole, into which screws the forward end of the key G, by which thelever-pawl E is drawn back from the toothed bar D, to allow the sash Bto be raised and lowered. The key G can be detached and carried in thepocket, if desired. The key G is inserted through a notch in the innerside of the window-cas ing. H is a bolt, which is placed in a case, I,let into and secured to the top bar of the lower sash B. The bolt H ismade with an ofl'set or shoulder, against which rests the end of acoiled spring, J, the other end of which rests against the case I tohold the bolt H out, as shown in Fig. 3. The forward end of the bolt Henters a hole in the side bar of the upper sash 0. Two holes are made inthe sash Gto receive the bolt H-one whenthe upper sash O has beenraised, and the other when the sash has been partially lowered. The boltH is pushed forward by the leverpawl E, the upper end of which restsagainst the outer end of the said bolt H. The bolt H is only heldforward when the lower sash B is fully lowered.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The combination of the bolt H and spring J with thelever-pawl E and spring F, for locking the upper sash of the window,substantially as herein shown and described.

SAMUEL W. COUCH.

Witnesses JAMES T. GRAHAM, O. Snnewrcx.

